Eccentric.



R. SCHMITZ.

Eccsmmc. APPLICATION FILED MAR 20| 1911.

1,183,774. Patented May 16, 1916.A

WITNESSES '6, l l INVENTOR fan/)- M7 Kg @W UNITED sTATEs PATENTOEEICE.,l

- RICHARD sCHMITz, OF CHICAGO, ILLINOIS, AssIGNoRTO sCHMITz ENGINECOMPANY,

' A CORPORATION OE SOUTH DAKOTA.

ECCENTRIC.

Application filed March 20, 1911.

To all whom t may concern Be it known that I, RICHARD SCHMITZ, a citizenof the United States, resident of Chicago, county of Cook, and State ofIllinois, have invented a certain new Eccentric, of which the followingis the specification.`

It is well known to persons skilled in the art, that one of the mostexpensive parts of an engine is the crank shaft, due both to the expenseof making the forging and the cost 'of machining it.

My invention has for its obj ect, to produce ,an engine shaft which willavoid both of 'the above objectionable features, and which will becapable of acting as a fly-wheel, all of the parts being located withinthe crank case of the engine and avoiding the neces sity of a fly-wheelon the outside thereof and will also possess numerous desirable oneswhich will appear from the hereinafter contained description.

My new engine shaft is shown in the accompanying drawings which arehereunto annexed, and are a part of this specification, in which- Figure1 is a side elevation, one end of the shaft being broken away showingthe remaining portion in section. Fig. 2 is an end view.

Similar reference numerals refer to similar parts throughout the entiredescription.

As shown in the drawings, 1 is a shaft, formed of seamless steel tubing.

2 indicates eccentrics which are mounted upon the shaft 1. As shown inthe drawings, they are secured in position by means of a key 3, thoughit is obvious that any means of attaching an eccentric to\a shaft may beemployed.

4 is the eccentric strap or collar, which is shown in the form of aring, but any form may be used which will effect the purpose withoutdeviating from the spirit of my invention.

The rod 5 extends upwardly and terminates in a bearing 16 for the pistonpin. The strap 4, as shown in the drawing, is

mounted upon ball bearings 25, which are y held in place by means ofplates 6 and 7.

When it is desirable to provide an internal Specification of LettersPatent.

ratentedMayic, .1916. serial No. 615,722. i

construction as shown in the drawing, ex-

cept in the fact that the same represents a new engine shaft, in whichthe connecting rod extending from the piston, does not pass the centerof the shaft, at or during any portion of the stroke.

The eccentrics are provided ywith an inter-v nal passage 12 for thepurpose of conveying oil to the bearings which it is intended should besupplied to the interior of the shaft l. The said passage Operates toprovide for the thorough oiling of the eccentric bearings while for thepurpose of providing for the oiling ofthe other moving parts, I form aplurality of openings 13 which are preferably drilled at an angle, sothat the Oil which should be under pressure will be thrown out of saidopenings, due both to the pressure and to the centrifugal force upon thepiston pin, and will in this manner effectually spray all the movingparts in the interior in the crank case.

An engine shaft constructed in this manner possesses numerousadvantagesl which will be apparent to persons skilled in the art, uponinspection of the drawings and description, among which, may be namedcheapness in original cost, ease of manufacture inasmuch as the machinework is practically all straight lathe work and assembly, and ease ofeffecting a perfect balance of the rotating parts as it is obvious toany persons skilled in the artl that no counterweights are required, asis the case where a crank shaft of the usual construction is employed.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. In combination with an engine shaft, a connecting rod, means forproviding a connection between the connecting rod and shaft, said meanscomprising a disk mounted eccentrically on the shaft, a plate adjacenteach side of the disk, a circular strap housed by the plates, said strapbeing arranged in spaced relation with the disk, a circumferentialflange on the disk for dividing the spaces between the strap and diskinto independent bearing race ways and ball bearings positioned in theWays.

2. In combination with a hollow engine shaft, a connecting rod,means-for providing a connection between the connecting rod and shaft,said means comprising a disk, said disk having a central bore extendingto the periphery thereof, said bore being in communication with thehollow shaft, a plate adjacent each side of the disk, a circular straphoused by the plates, said strap being arranged in spaced relation withthe disk to form a race way, a flange for dividing the race way intoindependent race ways, and

ball bearings positioned in the ways.

In witness whereof I have signed the foregoing specification.

RICHARD SCHMITZ.

Witnesses: C. M. BAUMEISTER, K. SoLBnY.

Copies of this patent` may be obtained for. ve cents each, by addressingthe Commissioner o1' Patents, Washington, D. C.

